Friends from the SystemModeler

I have created a WSM model in Mathematica, In the simulation center, I have connected a Pulse source that drivens the dynamics of the model. The responses are as expected. I wanted to do the connection within Mathematica like this

BoostParmeters = {Rs -> 0.001, Rd -> 0.001, RLoad -> 12.5, Vd -> 0.8, 
   C1 -> 0.0002, L -> 0.0002, Vin -> 18};
(*System equations*)

eqns1 = {Derivative[1][iL][t] == 
    Vin/L - (Rs iL[t])/L - (Vd S[t])/L - (Rd iL[t] S[t])/L + (
     Rs iL[t] S[t])/L - (S[t] vC[t])/L, 
   Derivative[1][vC][t] == (iL[t] S[t])/C1 - vC[t]/(C1 RLoad)};
(*The connections*)

conns = {S[t] \[Element] "Modelica.Blocks.Interfaces.RealInput", 
   iL[t] \[Element] "Modelica.Blocks.Interfaces.RealOutput"};
BoostWSM = 
  CreateSystemModel["BoostCCM", eqns1, t, 
   conns, <|"InitialValues" -> Thread[{iL -> 0, vC -> 0}], 
    "ParameterValues" -> BoostParmeters|>];
(*Source*)
pwm2 = 
  SystemModel[
   "Modelica.Blocks.Sources.Pulse", <|"ModelName" -> "pwmSignal", 
    "ParameterValues" -> {"width" -> 40, "period" -> 0.000100}|>];
(*Connecting the systems*)
Boost2 = 
 ConnectSystemModelComponents[{BoostWSM, 
   pwm2}, {"Pulse.y" -> "BoostCCM.S"}]

After this, it seems that the connection has been done. However, the siumlation

Simu = SystemModelSimulate[Boost2, {0, 0.02}];
SystemModelPlot[Simu, {"iL", "vC"}, PlotMarkers -> None]

will fail. I am not sure what I have done wrong. Could someone help me with this?

Cheers Jesus